The effect of copper loading on the acidity of Cu/HZSM-5 catalysts: IR of ammonia and methanol for methylamines synthesis
作者： M.H.O. Nunes , V. Teixeira da Silva , M. Schmal
DOI: 10.1016/J.APCATA.2005.06.031
关键词:
摘要: Abstract The Cu/HZSM-5 catalysts (1.2, 3.7 and 6.0%, p/p, in Cu) were tested methanol amination showing that the 3.7% copper sample was fairly more selective to MMA than other metallic catalysts. results of textural superficial analyses obtained this work showed increase content is associated with procedure adopted samples preparation accounts for variations Lewis surface acidity areas. infrared spectra HZSM-5 after ammonia uptake successive steps at 623 K presented mono-, di- tri-methylamines influenced upon addition. metal should facilitate amine desorption, probably, due decreasing Bronsted acidity.
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